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Digital Audio Editing
Audacity-logo-r-full-whitebg.jpg
One of the many digital audio editing programs is Audacity
.

Audacity
is a free, easy-to-use software for recording and editing sounds. It is available for Microsoft Windows, Mac OS X, GNU/Linux, and other operating systems. The latest stable release is Audacity 1.2.6, although a 1.3.6. Beta version is also offered. Its main features include: live audio recording; conversion of tapes and records into digital recordings or CDs; cutting, copying, splicing or mixing sounds together; speed or pitch change; effects such as echo, phaser, wahwah, reverse, and background noise removal; frequency and volume adjustment; sound quality improvement, etc.

To download Audacity for Microsoft Windows, click: http://audacity.sourceforge.net/download/windows


speaker_01.gifThis is an example of what Audacity
can do:

Original version:

Edited version:

In this example I followed these editing steps:

· I selected and deleted portions not needed (like clearing throat noise, or little coughing, clicking of mouse, banging noise, or badly recorded).
· I silenced the start and the end portions.
· I did not like how the last sentence sounded, so I recorded it again (it appeared as a second track), cut it from the second track and pasted it on the original track. Then I deleted the previous version, and the second track.
· Between 5.0 s and 6.0 s, there was a very tiny click sound, which I tried to remove by using cross fade out and cross fade in.
· The extra “a” sound between 10.0 s and 11.0 s was deleted.
· I added a bass boost effect to give depth to the sound recording.
· I added a little echo effect to the first and last sentence to give emphasis (not too much as to make it not understandable).
· I applied equalization to the whole sound recording.
· I applied phaser effect to the portion that mentions examples of effects, just to add an extra “dramatic” effect.
· I exported the file as mp3.